Solution Deposited NiO Thin-Films as Hole Transport Layers in Organic Photovoltaics

K. Xerxes Steirer, Jordan P. Chesin, N. Edwin Widjonarko, Joseph J. Berry, Alex Miedaner, David S. Ginley, Dana C. Olson

Research output: Contribution to journalArticlepeer-review

297 Scopus Citations


Organic solar cells require suitable anode surface modifiers in order to selectively collect positive charge carriers and improve device performance. We employ a nickel metal organic ink precursor to fabricate NiO hole transport layers on indium tin oxide anodes. This solution deposited NiO annealed at 250 °C and plasma treated, achieves similar OPV device results reported with NiO films from PLD as well as PEDOT:PSS. We demonstrate a tunable work function by post-processing the NiO with an O2-plasma surface treatment of varied power and time. We find that plasma treatment is necessary for optimal device performance. Optimal devices utilizing a solution deposited NiO hole transport layer show lower series resistance and increased fill factor when compared to solar cells with PEDOT:PSS.

Original languageAmerican English
Pages (from-to)1414-1418
Number of pages5
JournalOrganic Electronics
Issue number8
StatePublished - 2010

NREL Publication Number

  • NREL/JA-520-49285


  • Anode surface modifier
  • Hole transport layer
  • Nickel oxide
  • NiO
  • Organic solar cells


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